repository: check the format versioncmn/repo-version-check

This is something we do on re-init but not when opening a
repository. This hasn't particularly mattered up to now as the version
has been 0 ever since the first release of git, but the times, they're
a-changing and we will soon see version 1 in the wild. We need to make
sure we don't open those.

1 files changed, 17 insertions, 0 deletions

diff --git a/tests/repo/open.c b/tests/repo/open.c
index 637c785d5..6a5ab24fb 100644
--- a/tests/repo/open.c
+++ b/tests/repo/open.c
@@ -20,6 +20,23 @@ void test_repo_open__bare_empty_repo(void)
 	cl_assert(git_repository_workdir(repo) == NULL);
 }
 
+void test_repo_open__format_version_1(void)
+{
+	git_buf path = GIT_BUF_INIT;
+	git_repository *repo;
+	git_config *config;
+
+	repo = cl_git_sandbox_init("empty_bare.git");
+
+	cl_git_pass(git_repository_open(&repo, "empty_bare.git"));
+	cl_git_pass(git_repository_config__weakptr(&config, repo));
+
+	cl_git_pass(git_config_set_int32(config, "core.repositoryformatversion", 1));
+
+	git_repository_free(repo);
+	cl_git_fail(git_repository_open(&repo, "empty_bare.git"));
+}
+
 void test_repo_open__standard_empty_repo_through_gitdir(void)
 {
 	git_repository *repo;